Rotary pump



. or box as shown at (e) Fig. 2.

UNITED STATES PATENT OFFICE.

WILLIAM A. YOUNG, OF CHARLOTTE, NORTH CAROLINA.

ROTARY PUMP.

Specification of Letters Patent No. 19,004, dated December 29, 1857.

To all whom it may concern.'

Be it known that I, WILLIAM A. YOUNG, of Charlotte, in the county of Mecklenburg and State of North Carolina, have invented a new and Improved Rotary Pump; and I do hereby declare that the following is full, clear, and exact description of same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l, is a plan or top view of my improvement, the top of the cylindrical case or box being removed. Fig. 2, is a vertical central section of the cylindrical case or box, the working parts not being bisected. In this view the pump is represented in proper position at the bottom of a well.

Similar lette-rs of reference indicate corresponding parts in the two figures.

This invention relates to an improved rotary pump which is designed tobe submerged or placed at the bottom of the well or reservoir.

The invention consists in placing, in a peculiar manner, a series of valves or buckets within a circular rotating head placed eccentrically within a cylindrical case or box, whereby the valves are rendered self-acting as the head is rotated, and a very simple and efficient pump obtained.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, Fig. 2 represents a well or reservoir which contains the water to be elevated, and B, is a cylindrical case or box which is placed at the bottom of the well or reservoir. The case or box B, has an induction aperture (a) made through its side and an eduction aperture is also made through the side of the case or box, a pipe O, being connected with said aperture, the pipe C, extending upward above the top of the well or reservoir. The space between the induction and eduction apertures is equal to about one quarter of the circumference of the case or box, as shown in Fig. 1.

D, is a circular head which is considerably less in diameter that t-he interior of the case or box B. This head is placed eccentri cally within the case or box B, and is placed on a vertical shaft E, the lower end of which is stepped in the bottom of the case The edge of the head D, is in contact with the inner side of the case or box B, at a point (f) midway between the induction and eduction passages, as shown clearly in Fig. l, the point- (f) being water tight, and forming a cut off between the induction and eduction passages.

In the head D, three vertical rectangular slots (o), (g), (g), are made. These slots extend entirely through the head and are made in the head tangentially with the shaft E, or tangentially with a circle (gx) which is concentric with the shaft E and head D, as shown clearly in Fig. l and in each slot (g) a valve or bucket F, is placed. These valves or buckets correspond in form to the slots (g), the outer ends of the valves being curved or rounded to correspond to the curvature of the inner side of the box or case B, against which they bear. One side of the outer part of each valve or bucket has a curved projection (71,) attached as shown in Fig. 1.

The shaft E, extends upward above the well or reservoir A, and is rotated by any proper means and through the medium of any suitable gearing.

The operation is as follows: The head D, is rotated in the direction indicated by the red arrow and the outer ends of the valves or buckets F, owing to their tangential position in the head D will always press against the inner side of the case or box B The water in the well or reservoir A, will pass through the induction passage (a), see blue arrows, and will be forced successively by the valves or buckets F, as they pass the induction orifice, up through the pipe C. The resistance the water offers to the action of the valves or buckets will tend to keep the outer ends of the valves or buckets against the inner side of the box or case and the curved projections (It) are intended to aid or increase this effect. Still, independently of the project-ions (it), the water will have a tendency to thrust the valves or buckets outward owing as before stated to their tangential position with the shaft E, and consequent oblique position relatively with the direction in which the water is forced. -This will be clearly understood by referring to Fig. l, in which, the red dotted line (ax) shows the direction in which the water is forced, and the red dotted line (am) the thrust given the valves or buckets by the reactive force. The ends of the buckets therefore are made to work water tight against the inner side of the case or box B, witho-ut the aid of springs o-r any eX- t-raneous or special device or appliance and the pump is therefore rendered extremely simple and eflicacious. By turning the head in a reverse direction to that indicated by the red arrow, the valves F, will be `forced onward of course as the reactive force will be in a reverse direction to that indicated by the red dotted line (am) as shown by the blue dotted lines (bx). Therefore by rotating the head D, one or two revolutions backward and throwing the valves or buckets inward, the water in pipe C will be allowed to descend and said pipe be prevented from freezing up in winter.

I would remark that there are other forces which tend to keep the'valves or buckets F, thrown outward, viz, the friction between the valves 'F Vand the bottom part of the pump and theV centrifugal force generated bythe rotation ofthe head D. These forces however are chiefly important in acting upon the valves as they pass the point (f) rendering their movement or action quick or so actuating` them as to cause the water which passes thro-ugh (a) to act upon them as soon as they pass the point (f) I am aware that sliding pistons have been fitted in rotating heads placed eccentrically within cylindrical cases or boxes and arranged in various ways, said device being employed both for rotary pumps and rotary steam engines. I therefore do not claim broadly the employment or use of sliding valves or buckets placed within a head fitted eccentrically in a case or box; but,

I claim as new and desire to secure by Letters Patentl. Placing the sliding valves or buckets F, within the rotating head D, tangentially with its shaft E, or tangential with a circle concentric therewith and with the head, the head being placed eccentrically within the box or case B, which is provided with the induction and eduction passages (a), (b), sub- L15 stantially as and for the purpose set forth.

2. I further claim the curved projections (7L) at the outer ends of the valves or buckets F, substantially as and for the purpose herein specied.

W. A. YOUNG.

Witnesses W. TUsoH, W. HAUFF. 

